The USA-NPN website will be temporarily unavailable for scheduled maintenance beginning late Sunday, July 26 through early Monday, July 27 (EDT). Thank you for your patience and understanding.
We are undertaking a major revision of our Nature's Notebook data collection app to make it easier and more fun to track plant and animal seasonal activity!
Tiny, somewhat circular dots within a leaf scar, caused by the separation/breaking of the fibrovascular bundles which pass through a leaf petiole into the leaf blade. Left once a leaf drops off from the stem of a plant